The BAT41 batteries are compatible with the DX100, DX121, DC200 and DX340ES digital wireless systems. BAT41s are used to charge the BP200, BP210, BP300 and BP340 beltpacks and WH200, WH210, WH300 and WH340 all-in-one headsets.

For HME's BP200 beltpack and WH200 headset. This battery can last up to 18-20 hours on a single charge. The easily removable batteries are located in each beltpack and are very small for how long they last and the headsets they are powering. Having a removable battery instead of a built-in rechargeable battery allows the units to stay in production while additional batteries are being charged.